1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) International Business Machines  Corp., 2001
4 *  07/2001 Ported by Wayne Boyer
5 */
6
7/*\
8 * [Description]
9 *
10 * Verify that chmod(2) succeeds when used to change the mode permissions
11 * of a file or directory.
12 */
13
14#include "tst_test.h"
15
16#define MODE	S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
17#define TESTFILE	"testfile"
18#define TESTDIR		"testdir_1"
19
20static int modes[] = {0, 07, 070, 0700, 0777, 02777, 04777, 06777};
21
22static char *test_dir;
23static char *test_file;
24
25static struct variant {
26	char **name;
27	unsigned int mode_mask;
28	char *desc;
29} variants[] = {
30	{&test_file, S_IFREG, "verify permissions of file"},
31	{&test_dir, S_IFDIR, "verify permissions of directory"},
32};
33
34static void verify_chmod(unsigned int n)
35{
36	struct stat stat_buf;
37	int mode = modes[n];
38	struct variant *tc = &variants[tst_variant];
39
40	TST_EXP_PASS(chmod(*tc->name, mode), "chmod(%s, %04o)",
41	             *tc->name, mode);
42
43	if (!TST_PASS)
44		return;
45
46	SAFE_STAT(*tc->name, &stat_buf);
47	stat_buf.st_mode &= ~tc->mode_mask;
48
49	if (stat_buf.st_mode == (unsigned int)mode) {
50		tst_res(TPASS, "stat(%s) mode=%04o",
51				*tc->name, stat_buf.st_mode);
52	} else {
53		tst_res(TFAIL, "stat(%s) mode=%04o",
54				*tc->name, stat_buf.st_mode);
55	}
56}
57
58static void setup(void)
59{
60	tst_res(TINFO, "Testing variant: %s", variants[tst_variant].desc);
61
62	if (tst_variant)
63		SAFE_MKDIR(*variants[tst_variant].name, MODE);
64	else
65		SAFE_TOUCH(*variants[tst_variant].name, MODE, NULL);
66}
67
68static struct tst_test test = {
69	.setup = setup,
70	.test_variants = ARRAY_SIZE(variants),
71	.tcnt = ARRAY_SIZE(modes),
72	.test = verify_chmod,
73	.needs_tmpdir = 1,
74	.bufs = (struct tst_buffers []) {
75		{&test_file, .str = TESTFILE},
76		{&test_dir, .str = TESTDIR},
77		{}
78	}
79};
80